package com.shf.security.security;

import io.jsonwebtoken.CompressionCodecs;
import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.SignatureAlgorithm;
import org.springframework.stereotype.Component;

import java.util.Date;

@Component
public class TokenManager {
//    token有效时长
    private long tokenExpireTime=24*60*60*1000;

//    编码密钥
    private String tokenSignKey="123456";

//    1.使用jwt根据用户名生成token
    public String createToken(String username){
        String token = Jwts.builder().setSubject(username)
                .setExpiration(new Date(System.currentTimeMillis() + tokenExpireTime))
                .signWith(SignatureAlgorithm.HS512, tokenSignKey)
                .compressWith(CompressionCodecs.GZIP).compact();
        return token;
    }

//    2.根据token字符串得到用户信息
    public String getUserInfoFromToken(String token){
        return Jwts.parser().setSigningKey(tokenSignKey).parseClaimsJws(token).getBody().getSubject();
    }

//    3.删除token
    public void removeToken(String token){
        
    }
}
